Everyone expects FB to join NASDAQ 100 on Dec 12th. Thousands of index funds must purchase FB share to comply with their own investment strategy. Shorties must watch out for that !! Don't get burn and cover soon !! Price Line is expected to join too.
I know many many computer-deficient people joining FB recently so that they can connect to their children and grandchildren. To them, FB is the internet. And they all have the ability to spend and buy gifts !!
Most popular web sites also use FB for credential. It is another major income for FB.
If FB merges/friends with any major retailers (like Amazon), FB could become the biggest, the best, and most popular e-commerce platform in the world. It means $$$$$.